Power mechanism.



No. 658,825. Patented Oct. 2, won.

J. BEAN.

POWER MECHANISM.

(Application filed June 19, 1900.)

N0 Model.)

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I 7/ v A h v By M(,

Al/arney JOHN BEAN, OF LOSGATOS, CALIFORNIA.

POWER MECHANISM.

SPECIFICATION forming part of Letters Batent No. 658,825, dated etober 2, 1900.

Application filed June 19, 1900.

To all whom it mag concern:

Be it known that 1, JOHN BEAN, a citizen of the United States, residing at Los Gatos, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in Power Mechanisms; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked thereon.

The present invention has reference to that class of power mechanism for producing reciprocating motion through the medium of a cam device upon a rotatable shaft, the cams acting alternately against antifriction-rollers carried by a suitable frame or bar.

The object of the invention is to provide a mechanism of the above character that will be materially simplified in construction and effective in its action to produce the desired motion essentially increased, which object is attained by a mechanism constructed substantially as shown in the drawings and hereinafter described and claimed.

Figure 1 of the drawings is a side elevation, partly in section, ofa power mechanism constructed in accordance with my invention and showing it as applied to the pistons ofa double-acting pump; Fig. 2, a side elevation at right angles to that of Fig. 1.

In the accompanying drawings are shown two hangers, each hanger consisting of two parallel bars A B, which are joined at their upper ends by a cross-bar a. The bars B are longer than the bars A and at their lower ends have inwardly-extending arms I), and the shorter arms A have bearings 01 at their lower ends, which bearings extend outwardly at an obtuse angle and have journaled thereto the antifriction-rollers O. The cross-bar a of each hanger is provided with a depending bearing-plate c, to which are journaled the antifriction-rollers D, said antifriction-rollers being of any suitable construction, but are connected to the hangers, so that the rollers O D of each hanger will-be diametrically opposite to each other or on diflerent vertical and horizontal planes, as shown in Fig. 2 of the drawings, thereby insuring a more perfect action of the cam E thereon and rendering the reciprocating motion of the hangers serial No. 20.832. (No model.)

more eflective. The cam E is of peculiar shape, the cams being connected to the driving-shaft F so that they will assume the positions in relation to each other as shown in Fig. 2 of the drawings.

To the arm I) of the. bar A is suitably connected the solid piston-rod G, and to the arm 6 of the bar B is connected the hollow pistonrod H, the rods extending into the cylinder I of the pump. The two rods are given areciprocating motion through their con nections with the hangers and the alternate movement of the cams against the antifriction-rollers, thus alternately lifting the hangers and also the pistons to which they are connected.

The essential feature of the invention resides in the special form of the hangers, in which the hangers are enabled to be hooked over the driving-shaft, thereby allowing them to be easily removed.

The space between the bars A B is slightly greater than the diameter of the driving-shaft F, so the hangers will slide up and down without any frictional contact with the shaft.

The employment of the peculiarly-shaped hangers removes the necessity of the use of guide-rods or a special frame above the driving-shaft or any additional devices heretofore necessary in completing a successful power mechanism.

Although I have shown the power mechanism as applied to the operation of the pistons of a pump, it may be used for any purpose where a power mechanism would be found useful.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A power mechanism consisting of one or more hangers each comprising two parallel bars joined at their upper ends and adapted to hook over the driving-shaft, antifrictionrollers upon the hanger, and a cam upon the driving-shaft adapted to bear against the rollers during its rotation, substantially as and for the purpose specified.

2. A power mechanism consisting of one or more hangers each comprising two parallel bars joined at their upperends, said bars be ing of unequal lengths and provided with antifriction-rollers disposed on different horizontal and vertical planes, and a rotatable 2 estate cam operating against the rollers, substantially as and for the purpose described.

3. A power mechanism consisting of one or more hangers each comprising two parallel bars joined at their upper ends, a depending bearing-plate at the juncture of the bars, an antifriction-roller connected to the plate, an antifriction-roller upon the lower end of one of the arms; and a rotatable cam adapted to act against the rollers, substantially as and to for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

JOHN BEAN. Witnesses:

DAVID C. CRUMMEY, H. E. OBRIEN; 

